Improvement in rotary pumps



@time dimite.

THOMAS SWAN, OF MANLIUS, NEW YORK.D

Letters Patent No. 103,684,0ated May 3l, 1870. l

IMPROVEMENT IN' ROTARY PUMPS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom fit may concern:

Be it known that I, THOMAS SWAN, of Manlius, in the county of Onondaga and State of New.r York, have invented a new and Improved Rotary Pump; and I do hereby deciare that the following is a full, clear, and exact description thereof, which will enable those skilled inthe art to make and use the saine, reference being had to the accompanying drawings forming part ot this specification, in which- Figure l is a side view of my invention, and

Figure 2 is a central (lect-'ion of the same.

Figure 3 is a detail View.

Similar letters of reference indicate like parts in the several figures.

In the accompanying drawing- A is the hollow globe, which is made in two parts A A', and bolted together by flanges a.

The said globe is suspendedA between two brackets, B B', in such manner as to be rotated by the gears C o.

Within the globe A is placed a disk, D, (fw o) which fits into the globular chamber HH accurately,

and is held at an angle somewhat inclined from the horizontal.

This disk D is seated by means ot' a spindle, d, on a ring, Il, which is xed to a prolongation of the bracket B' by a set-screw, e.

Ihere are two valve-seats or openings through the disk D, which areoccupied by valves l F.

The upper part of the chamber H is provided with another disk or diaphragm, G, which has two valves, f f, and this diaphragm is held in its position in a fixed manner by screw-bolts g' g'.

The chamber H above `the disk I) is divided into two compartments bya half-circular plate or butment,

\Il, the said butment being seated in a half round groove in the upper face of disk D, and its upper edge entering a cavity in the fixed disk ordiaphragm G K is the inlet or suction-pipe, and

J, the discharge or force-pipe. o

L is the air-chamber, having a hose-pipe or discharge, Z.

Its operation is as follows:

The whole globe and shell A is rotated by the gearing, or by other suitable means, and the diaphragm G.

and disk D also revolve with the globe, the diaphragm G being fixedV rigidly to the globe by the bolts g g', and the disk D being turned'on its spindle by the butment I.

When a half revolution of the globe has been made, the compartment H is' brought aroundso as to @harige places with the compartment H', and this movement throws the H-side of disk D down from the diaphragm G, so .that the compartment .H is made larger and sucks in water through its valve F, and at the same time the Hside ot disk D is brought into position shown by H, and that compartment is contraeted by that side ofthe disk being elevated, so that water is forced from said compartment H through its valve f, into the delivery enforcing-pipe J, and in this Inannerithe compartments H HI4 are alternately enlarged and contracted by the rotation of the globe A.

The wabbling mot-ion of the disk D is obtained by its rotative axis being out of line with the rotative axis`of the shell or globe.

In making-this motion, the disk D rocks on the foot of the butment I, laterally with relation to said butment, and the halt' circular edge of the butment slides cndwise on the upper walls of the globe-cham.- ber and in the diaphragm G, so that a kind of gimbal connection is made between the parts G, I, and I),.

which accommodates the wabbling motion of the said disk D.

The edges of the disk D can have a packing-ring of leather or other suitable material, and the lower face. of the diaphragm G can be so modified iu'form that there shall be less space iu the compartments H and H', when they are in the position of greatest contraction, and all or nearly all of the air in said conipartments be expelled, so that in starting the pump, no water-priming will be required.

By these means I obtain a rotary pump in which there is no jarring, clapping, or sudden change of motion to the working parts, thus allowing it to be driven freely and at a high velocity.

Having thus described my invention,

What I claim as new, and desire to secure by Letters Patent, is-

A pump which, for its chief working parts, combines the hollow globe A, wabbling disk D, and central partition or butment I, substantially as herein specifed.

The above specification of my invention signed by me this 3d day of December, 1869.

THOMAS SWAN.

Witnesses K. H. 0. PRESTON, F. A. MQRLEY. 

